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2D and 3D refraction-based visualization of breast cancer for early clinical check

Nuclear Science and Techniques 2006年第6期17卷 389-395页

作者： masami ando Anton MAKSIMENKO Tetsuya YUASA Eiko HASHIMOTO Katsuhito YAMASAKI Shu IHIHARA Hiroshi SUGIYAMA Tokiko ENDO LI Gang CHEN Zhihua Kazuyuki HYODO Ei UENO DDS Center RIST Tokyo University of Science Chiba 278-8510 Japan Photon Factory IMSS KEK Oho I-1 Tsukuba Ibaraki 305-0801 Japan Department of Photo-Science GUAS Oho 1.1 Tsukuba Ibamki 305-0801 Japan Faculty of Engineering Yamagata University Yonezawa Yamagata 992-8510 Japan Clinical Genome Informatics Center School of Genome Science Kobe University Hyogo 650-0017 Japan Departramt of Pathology Nagoya Medical Center Nagoya 460-0001 Japan Department of Radiology Nagoya Medical Center Nagoya 460-0001 Japan BSRF IHEP CAS Yaquanlu Beijing 100049 China China-Japan Friendship Hospital Yinhua Donglu Beijing 100029 China Department of Breast-Thyroid-Endocrine Surgery University of Tsukuba Ibaraki 305-8573 Japan

Ductal carcinoma in-situ (DCIS) has been visualized by 2D XDFI (X-ray dark-field imaging) and further by a 3D X-ray CT, and the data was acquired by the X-ray optics DEI (diffraction-enhanced imaging). A newly made algorithm was used for CT. Data of 900 projections with interval of 0.2 degrees were used. Ductus lactiferi, microcalci-fication in a 3D form have been clearly visible. The spatial resolution available was approximately 30μm.

关键词：折射乳腺癌临床检查 CT

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Non-destructive investigation of the 3D inner structure of Precambrian embryos fossil by synchrotron hard x-ray phase contrast micron CT

Non-destructive investigation of the 3D inner structure of P...

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第十一届中国体视学与图像分析学术会议

作者： Paul Tafforeau masami ando Hiroshi Sugiyama European Synchrotron Radiation Facility France Tokyo University of Science Japan Photon Factory KEK Japan

The recent development of the synchrotron hard x-ray phase contrast imaging and CT with sub-micron and nano-meter resolution is. presented first. Then I will focus on this method’s application in paleontology. The Weng’an fauna from Precambrian Doushantuo phosphates in Weng ’ an, Guizhou Province, China, contains likely fossil representatives of the oldest known metazoans, radiometrically age-dated as at least 580 million years old. One of the main restriction to study these unique fossils is the scarcity of the non-destruc-

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Small Angle X-Ray Scattering Imaging of Soft Tissue by Using Laue Diffraction Optical System

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Open Journal of Medical Imaging 2018年第3期8卷 54-63页

作者： Ge Jin Kenichi Okamura Yoshifumi Suzuki Yong Sun Yoshinori Chikaura masami ando Department of Applied Science for Integrated System Engineering Kyushu Institute of Technology Kitakyushu Japan Research Institute for Science and Technology Tokyo University of Science Noda Japan

We performed a feasibility study of Small angle X-ray scattering imaging under the condition of X-ray bright field imaging by Laue crystal diffraction optics of X-ray dark-field imaging that works as an angular analysis. Collagen in chicken tibia containing abundant soft fibrous tissue was chosen as a specimen. In traditional Small angle X-ray scattering optical system, we can derive the structure information of sample by calculating q value which is available from a scattering pattern. Thus it is usually necessary to conduct a 2D scan in order to obtain scattering image. In this paper it is described by a method by which not only small angle X-ray scattering imaging is available directly but also bright-field imaging and dark-field imaging can be obtained at the same time. As the first step, the feasibility of the imaging method should be confirmed by taking pictures of the samples with known periodic length. The preliminary test showed that the collgan’s lattice spacing d is 65.1 nm that was also taken photos by scanning electron microscopy. By rotating Laue angular analyzer by 112 arcseconds small angle X-ray scattering image appeared in bright-field.

关键词： XDFI SAXS Synchrotron Radiation Soft Tissue

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